1. Welcome to myturbodiesel.com, if this is your first visit, please read 1000 answered questions - TDI FAQ, DIY, and Wiki by clicking the link here or in the navigation bar above. Click the "Sign up Now" button to the right to create an account, registration is fast and free.
  2. After you create a free account, every subforum has reply boxes. Here is a thread showing how to create an account or post a new question, shown with pictures

What do you do when your intake looks like this?

Discussion in 'VW Mk4 Jetta, Golf, New Beetle, Passat TDI forum' started by dutchviking, Mar 14, 2011.

  1. dutchviking

    dutchviking New Member

    Joined:
    Mar 13, 2011
    Messages:
    18
    Car:
    Jetta TDI 2002
    What do I do now?:panic: What did I do wrong?:confused:

    I think my pics will tell you what my problem seems to be.

    But here is some issues that prompted me to start looking:
    Limp mode - forever stuck there
    Shutter at 2000 - 3000 rpm
    RPM topout at 2000 when cold
    Started as period limp mode and progressed VERY quickly (read weeks) to above.

    Always cleaned oil at proper intervals - etc. Maintained car well (at least I thought I did anyway:ugh)

    Attached Files:

    login to remove this ad
  2. dutchviking

    dutchviking New Member

    Joined:
    Mar 13, 2011
    Messages:
    18
    Car:
    Jetta TDI 2002
    After a cold night outside with little light, I have managed to remove the intake from the car. The muck extends into the head but not nearly as badly. Think slight coating on wall.

    Thoughts on how best to tackle this?

    My thanks in advance to those who have the patience to help!
  3. Seatman

    Seatman Active Member

    Joined:
    Jul 9, 2010
    Messages:
    5,135
    Car:
    2000 Mk4 Golf Estate 1.9tdi 174 bhp
    Location:
    Scotland
    Mods:
    PP764's, turbo and mapping
    Ooh that one deserves a prize:D that's minging as we say over here in Scotland lol, you could try the redneck method in the faq, some people are saying that oven cleaner works but I haven't tried it so can't say myself but have a look through the faq and see if that helps.:)

    http://www.myturbodiesel.com/1000q/a5/clean-intake-manifold-PD.htm
  4. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
    Messages:
    20,919
    Car:
    2006 Jetta TDI
    Location:
    CT
    His engine is an ALH, not a PD intake manifold, here is the correct writeup: http://www.myturbodiesel.com/1000q/a4/clean-intake-manifold-VW-TDI-carbon.htm

    First fix that and then figure out what is causing your low power. It sounds like your MAF is bad as well or your exhaust is plugged. Do more testing in the low power and limp mode FAQ articles and you'll probably find an easy solution :) Good luck.
  5. Seatman

    Seatman Active Member

    Joined:
    Jul 9, 2010
    Messages:
    5,135
    Car:
    2000 Mk4 Golf Estate 1.9tdi 174 bhp
    Location:
    Scotland
    Mods:
    PP764's, turbo and mapping
    Sorry my mistake, I knew it was a non pd but I just picked the wrong faq:)
  6. dutchviking

    dutchviking New Member

    Joined:
    Mar 13, 2011
    Messages:
    18
    Car:
    Jetta TDI 2002
    My thanks!
    I am working on getting the junk out. :bangshead It is surprisingly resiliant; as Homer Simpson would say "Urge to kill, Rising".

    If I were to unplug the MAF while the engine was running would I hear a difference? :ummWhen I did, nothing semed to happen. Would this indicate in even the sligtest manner that something was wrong? I know the ECU grabs a default value when none is present, but I thought something might change anyway.

    Once the intake is clean I will progress to limp mode issue. I was hoping the two (intake issues and limp mode) were tied together, but I guess not?:(

    As an aside. Any thoughts on Brake Cleaner in head intake? I was using it to clean the head around the intake because I really really don't want to take the head off. There was grime and sludge in there but only a few mm worth by the openings. Its obviously hard to see into it. I used some break cleaner on a bristle brush going only in the "outword" direction (meaning not allowing the bristles to spray gunk into the intake) and used a rag with break cleaner on it to clean it out. Seemed to do a pretty good job. Then I used a high preassure blower (think computer case cleaning unit) to try to blow anything out. Don't know how succefull I was but I like to think I got everything. Thoughts on this. Am I a well intentioned fool or will I be ok?

    My thanks for all your help.
  7. dutchviking

    dutchviking New Member

    Joined:
    Mar 13, 2011
    Messages:
    18
    Car:
    Jetta TDI 2002
    WHAT? YOU RUINED MY ENGINE... GAHHHH Oh wait, nope, your good. I had already figured out what you meant anyway. :panic:

    Thanks though!
  8. Seatman

    Seatman Active Member

    Joined:
    Jul 9, 2010
    Messages:
    5,135
    Car:
    2000 Mk4 Golf Estate 1.9tdi 174 bhp
    Location:
    Scotland
    Mods:
    PP764's, turbo and mapping
    It was me that put all that gunk in your intake in the first place lol.:D

    It doesn't matter if there's still a bit of black oily smear still in the intake as long as the solid stuff is gone, I wouldn't want big chuncks trying to get in to the cylinders while running. It might be an idea to get to the turbo while the intake's off and check the actuator and that the lever part for the vanes isn't stuck.:)
  9. kd7iwp

    kd7iwp New Member

    Joined:
    Jul 10, 2009
    Messages:
    14
    Last saturday I cleaned out the intake on my parents 2000 Jetta and it looked actually a bit worse than yours. They had similar issues, limp mode just happened this week, but it hasn't had much power for a year or two, and it couldn't rev above 3,000 rpm. 2 things we did, pressure-sprayed/burned the crud out of the manifold, and I also pressed up and down on the actuator shaft going to the turbo. It was really stuck in one spot, so badly that if I pushed it down the spring couldn't even push it back up. So I pressed it about 100 times up and down until it was free. The car has brand new life again.
  10. dutchviking

    dutchviking New Member

    Joined:
    Mar 13, 2011
    Messages:
    18
    Car:
    Jetta TDI 2002
    Thanks, I'll give that a try! The consensus seems to be preassure washing or burning. Sadly I seem to have the option of doing neither. Poverty, living in a new town and lack of vehicle are really buming me out.:annoyed I think I might crack out the blow torch. :nana2:

    Cheers

    Rick
  11. Seatman

    Seatman Active Member

    Joined:
    Jul 9, 2010
    Messages:
    5,135
    Car:
    2000 Mk4 Golf Estate 1.9tdi 174 bhp
    Location:
    Scotland
    Mods:
    PP764's, turbo and mapping
    Lol I only have a lame blowtorch and a pair of lungs but I got there after feeling light headed a few times.:D
  12. dutchviking

    dutchviking New Member

    Joined:
    Mar 13, 2011
    Messages:
    18
    Car:
    Jetta TDI 2002
    All cleaned up and lots of boost!

    Alright, so I cleaned everything up. It took me a week of trying everything but a blow torch, but once I got there KABLOOM, all the crap came out.:+1
    -Then I got it all back in the engine with only minor blood stains and sweat.:+1
    -I ran it on the highway and HOLY SHARTS the boost was fine. I don't think I had this much boost when I bought the car.:nana2:

    -Now i just have to fix the exhaust, timing belt, windshield, door handle, radiator fans, rust spots, passenger speaker, glow plug cylinder one, .........werd

    My very real thanks for everyones help and suggestions. I wouldn't have had the nerve to piss off my neighbors with all the smoke if you lot had assured me it would work!

    Cheers,
    Rick
  13. Seatman

    Seatman Active Member

    Joined:
    Jul 9, 2010
    Messages:
    5,135
    Car:
    2000 Mk4 Golf Estate 1.9tdi 174 bhp
    Location:
    Scotland
    Mods:
    PP764's, turbo and mapping
    Lol it's an ongoing mission, I've just pulled my carpets out because the floor is soaking wet, the underlay is stinking so it must've been like that for a while. I only wanted to lift the back bit to get to the tube things that the handbrake cables run through but boy I didn't expect that lol, they'll have to stay out til I find the leak now that's for sure but it's more like a rally car now:D

Share This Page